Simulation analysis method and device for waterproofness of automobile electronic product and terminal

Abstract

The invention discloses a waterproof simulation analysis method and device for an automobile electronic product and a terminal, and belongs to the technical field of automobiles. Performing waterproof simulation modeling on the three-dimensional data of the to-be-tested automobile electronic product, creating static analysis steps and boundary conditions according to the water pressure and critical contact pressure curve data, and performing analysis to obtain a simulation model file and a simulation result file; and performing waterproof performance verification according to the simulation model file and the simulation result file. According to the automobile electronic product waterproof performance simulation analysis method and device and the terminal, the waterproof performance can be virtually verified in the product design process by introducing the simulation technology, the problem point can be accurately and rapidly found, and an optimization scheme can be formulated in a targeted mode.

Description

Technical Field

[0001] The invention discloses a method, a device and a terminal for simulating and analyzing the waterproofness of automobile electronic products, and belongs to the technical field of automobiles. Background Art

[0002] The development of waterproof performance of automotive electronic products is an important part of the design process. With the rapid development of automotive electronics, the requirements for waterproof performance of automotive electronic products are getting higher and higher. The development of waterproof performance of automotive electronic products has received extensive attention. At present, the waterproof performance of automotive electronic products is mainly verified by the immersion test of samples. There is a lack of simulation links in the design process, which leads to long development cycles and high costs. Summary of the invention

[0003] In view of the defects of the prior art, the present invention proposes a method, device and terminal for simulating and analyzing the waterproofness of automotive electronic products, which solves the problem that the waterproof performance of automotive electronic products is currently mainly verified by immersion tests of samples, lacks simulation links in the design process, and has a long development cycle and high costs.

[0004] The technical solution of the present invention is as follows:

[0005] According to a first aspect of an embodiment of the present invention, there is provided a method for simulating and analyzing the waterproofness of an automotive electronic product, comprising:

[0006] Obtain water pressure and critical contact pressure curve data;

[0007] Perform waterproof simulation modeling on the three-dimensional data of the automotive electronic product to be tested, create static analysis steps and boundary conditions according to the water pressure and critical contact pressure curve data, and perform analysis to obtain a simulation model file and a simulation result file;

[0008] The waterproof performance is verified according to the simulation model file and the simulation result file.

[0009] Preferably, the obtaining of water pressure and critical contact pressure curve data includes:

[0010] Under the condition of rubber sealing strips of the same material, a waterproof simulation test was carried out to obtain the corresponding rubber compression data when water leakage occurred under multiple different water pressures;

[0011] The water pressure and critical contact pressure curve data are obtained according to the compression amount data of the corresponding rubber when water leaks under the multiple different water pressures.

[0012] Preferably, the step of performing waterproof simulation modeling on the three-dimensional data of the automotive electronic product to be tested includes:

[0013] Importing the three-dimensional data of the automotive electronic product to be tested into the Hypermesh software, deleting the three-dimensional data of the electronic components inside the box and retaining the three-dimensional data of the box, the rubber sealing strip and the upper cover;

[0014] The upper cover is moved upward to a displacement amount that does not interfere with the rubber strip, and the three-dimensional data of the box body, the rubber sealing strip, and the upper cover are meshed and imported into the Abaqus software;

[0015] Assign material properties to each part individually.

[0016] Preferably, the step of creating a static analysis step and boundary conditions according to the water pressure and critical contact pressure curve data and performing analysis to obtain a simulation model file and a simulation result file includes:

[0017] Create 4 static analysis steps, where:

[0018] In the initial analysis step, a contact relationship is created between the rubber strip and the upper cover and the box body;

[0019] To simulate the assembly process of electronic products, the first boundary condition is created in the initial analysis step to impose full constraints on the inner surface of the bolt connection hole between the box and the upper cover in the box;

[0020] Create the second boundary condition to impose full constraints on the inner surface of the bolt connection hole between the upper cover and the box body;

[0021] Create a predefined field boundary condition and set the initial temperature of the entire model to 25°C;

[0022] According to the water pressure at the water depth position of the part corresponding to the test condition data and the water pressure and critical contact pressure curve data, the corresponding critical contact pressure is obtained, and according to the corresponding water pressure at the water depth position of the part and the corresponding critical contact pressure, the pressure penetration is created in the second analysis step;

[0023] In the third analysis step, the temperature of the entire model was adjusted to 0°C;

[0024] In the fourth analysis step, the temperature of the entire model was adjusted to 100 °C;

[0025] Create a simulation task and submit it for analysis and calculation. After the calculation is completed, you will get the simulation model file in inp format and the simulation result file in ODB format.

[0026] Preferably, modifying the constraint conditions in the initial analysis step comprises:

[0027] All U3 degrees of freedom fixed constraints in the second boundary condition are changed to downward displacement, and the displacement amount is the displacement amount of the upper cover moving upward to not interfere with the rubber strip in the waterproof simulation modeling;

[0028] or,

[0029] Select a position in the constraints of the second boundary condition to maintain the fixed constraints of U1, U2, UR1, UR2 and UR3 unchanged;

[0030] or,

[0031] In the constraint of the second boundary condition, the degrees of freedom of U1, U2, UR1, UR2 and UR3 at other positions are released.

[0032] Preferably, modifying the constraint conditions in the initial analysis step further comprises:

[0033] When the degrees of freedom of U1, U2, UR1, UR2 and UR3 at other positions are released in the constraints of the second boundary condition,

[0034] Among the constraints of the first boundary condition, select the constraints at the positions corresponding to the constraints of the second boundary condition, and release the U1, U2, UR1, UR2 and UR3 degrees of freedom.

[0035] Preferably, the waterproof performance verification according to the simulation model file and the simulation result file includes:

[0036] Importing the simulation model file and the simulation result file into Hyperview software;

[0037] According to the contact pressure nephogram results on the sealing surface, determine whether the contact pressure nephogram results on the sealing surface are continuous:

[0038] Yes, proceed to the next step;

[0039] No, the model needs to be optimized and re-simulated;

[0040] According to the fluid pressure cloud diagram results, determine whether the scope of the fluid pressure only includes the surface of the sealing strip outside the electronic product:

[0041] Yes, the sealing meets the requirements;

[0042] No, the sealing does not meet the requirements and the model needs to be optimized and re-simulated.

[0043] According to a second aspect of an embodiment of the present invention, there is provided a device for simulating and analyzing the waterproofness of an automotive electronic product, comprising:

[0044] An acquisition module, used to acquire water pressure and critical contact pressure curve data;

[0045] A simulation module is used to simulate and model the waterproofness of the three-dimensional data of the automotive electronic product to be tested, create static analysis steps and boundary conditions according to the water pressure and critical contact pressure curve data, and perform analysis to obtain a simulation model file and a simulation result file;

[0046] The verification module is used to verify the waterproof performance according to the simulation model file and the simulation result file.

[0047] According to a third aspect of an embodiment of the present invention, a terminal is provided, including:

[0048] one or more processors;

[0049] a memory for storing the one or more processor-executable instructions;

[0050] Wherein, the one or more processors are configured to:

[0051] Execute the method described in the first aspect of the embodiment of the present invention.

[0052] According to a fourth aspect of an embodiment of the present invention, a non-temporary computer-readable storage medium is provided. When instructions in the storage medium are executed by a processor of a terminal, the terminal is enabled to execute the method described in the first aspect of the embodiment of the present invention.

[0053] According to a fifth aspect of an embodiment of the present invention, an application product is provided. When the application product is running on a terminal, the terminal executes the method described in the first aspect of the embodiment of the present invention.

[0054] The beneficial effects of the present invention are:

[0055] The present invention provides a method, device and terminal for simulating and analyzing the waterproofness of automotive electronic products. By introducing simulation technology, the waterproofness can be virtually verified during the product design process, problem points can be accurately and quickly found, and optimization plans can be formulated in a targeted manner.

[0056] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 The present invention is a flowchart of a method for simulating and analyzing the waterproof performance of an automotive electronic product according to an exemplary embodiment.

[0058] Figure 2 The present invention is a flowchart of a method for simulating and analyzing the waterproof performance of an automotive electronic product according to an exemplary embodiment.

[0059] Figure 3The present invention is a schematic block diagram of a structure of a device for simulating and analyzing the waterproofness of automotive electronic products according to an exemplary embodiment.

[0060] Figure 4 The present invention is a schematic block diagram of a terminal structure according to an exemplary embodiment. DETAILED DESCRIPTION

[0061] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] An embodiment of the present invention provides a method for simulating and analyzing the waterproofness of an automotive electronic product. The method is implemented by a terminal, which may be a desktop computer or a notebook computer, etc. The terminal at least includes a CPU, etc.

[0065] Embodiment 1

[0066] Figure 1 and 2 The present invention is a flowchart of a method for simulating and analyzing the waterproofness of an automotive electronic product according to an exemplary embodiment. The method is used in a terminal and includes the following steps:

[0067] Step 101, obtaining water pressure and critical contact pressure curve data, the specific content is as follows:

[0068] Under the condition of rubber sealing strips of the same material, a waterproof simulation test was carried out to obtain the corresponding rubber compression data when water leaked under multiple different water pressures; when the actual contact pressure of the rubber and solid contact surface is less than the critical contact pressure, water will leak, and when the actual contact pressure of the rubber and solid contact surface is greater than the critical contact pressure, water will not leak. Based on the corresponding rubber compression data when water leaked under multiple different water pressures, the water pressure and critical contact pressure curve data were obtained.

[0069] The following are some examples:

[0070] Calculate the fluid pressure. The immersion test of the sample is carried out at a water depth of 1m. The fluid pressure calculation formula is P = ρgh + 1atm, and the parameter selection is ρ = 1000kg / m 3 , g=10N / kg, h=1m, 1atm=0.1MPa, the calculated fluid pressure at a water depth of 1m is 0.11MPa, and the corresponding critical contact pressure read on the curve is 0.15MPa.

[0071] Step 102, the three-dimensional data of the automotive electronic product to be tested is used for waterproof simulation modeling, and static analysis steps and boundary conditions are created and analyzed according to the water pressure and critical contact pressure curve data to obtain a simulation model file and a simulation result file. The specific contents are as follows:

[0072] Importing the three-dimensional data of the automotive electronic product to be tested into the Hypermesh software, deleting the three-dimensional data of the electronic components inside the box and retaining the three-dimensional data of the box, the rubber sealing strip and the upper cover;

[0073] The upper cover is moved upward to a displacement amount that does not interfere with the rubber strip, and the three-dimensional data of the box body, the rubber sealing strip, and the upper cover are meshed and imported into the Abaqus software;

[0074] Assign material properties to each part. To reflect the effect of temperature on the structure, the thermal expansion coefficient of the material needs to be input.

[0075] The following are some examples:

[0076] The box material is aluminum, material grade 6061, and the rubber material grade is DEC701, as shown in the following table:

[0077] Material Elastic modulus Poisson's ratio density Coefficient of thermal expansion 6061 70000MPa 0.33 <![CDATA[2.7e-9kg / m 3 ]]> 2.4e-5 / K Material C10 C01 D1 DEC701 0.897 0.224 0.00118

[0078] Create 4 static analysis steps, where:

[0079] In the initial analysis step, a contact relationship is created between the rubber strip and the upper cover and the box body;

[0080] To simulate the assembly process of electronic products, the first boundary condition is created in the initial analysis step to impose full constraints on the inner surface of the bolt connection hole between the box and the upper cover in the box;

[0081] Create the second boundary condition to impose full constraints on the inner surface of the bolt connection hole between the upper cover and the box body;

[0082] Create a predefined field boundary condition and set the initial temperature of the entire model to 25°C;

[0083] According to the water pressure at the water depth of the part corresponding to the test condition data and the water pressure and critical contact pressure curve data, the corresponding critical contact pressure is obtained, and the pressure penetration is created in the second analysis step according to the water pressure at the water depth of the part corresponding to the test condition data and the corresponding critical contact pressure;

[0084] In the third analysis step, the temperature of the entire model was adjusted to 0°C;

[0085] In the fourth analysis step, the temperature of the entire model was adjusted to 100 °C;

[0086] Create a simulation task and submit it for analysis and calculation. After the calculation is completed, you will get the simulation model file in inp format and the simulation result file in ODB format.

[0087] Modify the constraints in the above initial analysis step, including:

[0088] Change all U3 degrees of freedom fixed constraints in the second boundary condition to downward displacement. The displacement is the displacement of the upper cover moving upward to not interfere with the rubber strip in the waterproof simulation modeling.

[0089] or,

[0090] Select a position in the constraints of the second boundary condition to keep the fixed constraints of U1, U2, UR1, UR2 and UR3 unchanged;

[0091] or,

[0092] In the constraint of the second boundary condition, the degrees of freedom of U1, U2, UR1, UR2 and UR3 at other positions are released.

[0093] When the degrees of freedom of U1, U2, UR1, UR2 and UR3 at other positions are released in the constraints of the second boundary condition,

[0094] In the constraints of the first boundary condition, select the constraints at the positions corresponding to those in the constraints of the second boundary condition, and release the U1, U2, UR1, UR2, and UR3 degrees of freedom.

[0095] Step 103, verifying the waterproof performance according to the simulation model file and the simulation result file, the specific contents are as follows:

[0096] Import the simulation model file and simulation result file into Hyperview software;

[0097] According to the contact pressure nephogram results on the sealing surface, determine whether the contact pressure nephogram results on the sealing surface are continuous:

[0098] Yes, proceed to the next step;

[0099] No, the model needs to be optimized and re-simulated;

[0100] According to the fluid pressure cloud diagram results, determine whether the scope of the fluid pressure only includes the surface of the sealing strip outside the electronic product:

[0101] Yes, the sealing meets the requirements;

[0102] No, the sealing does not meet the requirements and the model needs to be optimized and re-simulated.

[0103] Embodiment 2

[0104] Figure 3 The present invention is a schematic block diagram of a structure of a device for simulating and analyzing the waterproofness of automotive electronic products according to an exemplary embodiment, the device comprising:

[0105] An acquisition module 210 is used to acquire water pressure and critical contact pressure curve data;

[0106] The simulation module 220 is used to perform waterproof simulation modeling on the three-dimensional data of the automotive electronic product to be tested, create static analysis steps and boundary conditions according to the water pressure and critical contact pressure curve data, and perform analysis to obtain a simulation model file and a simulation result file;

[0107] The verification module 230 is used to verify the waterproof performance according to the simulation model file and the simulation result file.

[0108] By introducing simulation technology, this application can virtually verify the waterproof performance during the product design process, accurately and quickly find problem points, and formulate targeted optimization plans.

[0109] Embodiment 3

[0110] Figure 4 300 is a block diagram of a terminal provided in an embodiment of the present application, and the terminal may be a terminal in the above embodiment. The terminal 300 may be a portable mobile terminal, such as a smart phone or a tablet computer. The terminal 300 may also be referred to as a user equipment, a portable terminal, or other names.

[0111] Typically, the terminal 300 includes a processor 301 and a memory 302 .

[0112] The processor 301 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 301 may be implemented in at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), and PLA (Programmable Logic Array). The processor 301 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a CPU (Central Processing Unit); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 301 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 301 may also include an AI (Artificial Intelligence) processor, which is used to process computing operations related to machine learning.

[0113] The memory 302 may include one or more computer-readable storage media, which may be tangible and non-transitory. The memory 302 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer-readable storage medium in the memory 302 is used to store at least one instruction, which is used to be executed by the processor 301 to implement a method for simulating and analyzing the waterproofness of automotive electronic products provided in this application.

[0114] In some embodiments, the terminal 300 may further include: a peripheral device interface 303 and at least one peripheral device. Specifically, the peripheral device includes: at least one of a radio frequency circuit 304 , a touch screen 305 , a camera 306 , an audio circuit 307 , a positioning component 308 and a power supply 309 .

[0115] The peripheral device interface 303 may be used to connect at least one peripheral device related to I / O (Input / Output) to the processor 301 and the memory 302. In some embodiments, the processor 301, the memory 302, and the peripheral device interface 303 are integrated on the same chip or circuit board; in some other embodiments, any one or two of the processor 301, the memory 302, and the peripheral device interface 303 may be implemented on a separate chip or circuit board, which is not limited in this embodiment.

[0116] The radio frequency circuit 304 is used to receive and transmit RF (Radio Frequency) signals, also known as electromagnetic signals. The radio frequency circuit 304 communicates with the communication network and other communication devices through electromagnetic signals. The radio frequency circuit 304 converts electrical signals into electromagnetic signals for transmission, or converts received electromagnetic signals into electrical signals. Optionally, the radio frequency circuit 304 includes: an antenna system, an RF transceiver, one or more amplifiers, a tuner, an oscillator, a digital signal processor, a codec chipset, a user identity module card, and the like. The radio frequency circuit 304 can communicate with other terminals through at least one wireless communication protocol. The wireless communication protocol includes but is not limited to: the World Wide Web, a metropolitan area network, an intranet, various generations of mobile communication networks (2G, 3G, 4G and 5G), a wireless local area network and / or a WiFi (Wireless Fidelity) network. In some embodiments, the radio frequency circuit 304 may also include circuits related to NFC (Near Field Communication), which is not limited in this application.

[0117] The touch display screen 305 is used to display the UI (User Interface). The UI may include graphics, text, icons, videos and any combination thereof. The touch display screen 305 also has the ability to collect touch signals on the surface or above the surface of the touch display screen 305. The touch signal can be input to the processor 301 as a control signal for processing. The touch display screen 305 is used to provide virtual buttons and / or virtual keyboards, also known as soft buttons and / or soft keyboards. In some embodiments, the touch display screen 305 can be one, and the front panel of the terminal 300 is set; in other embodiments, the touch display screen 305 can be at least two, which are respectively set on different surfaces of the terminal 300 or are folded; in some other embodiments, the touch display screen 305 can be a flexible display screen, which is set on the curved surface or folded surface of the terminal 300. Even, the touch display screen 305 can also be set to a non-rectangular irregular shape, that is, a special-shaped screen. The touch display screen 305 can be made of materials such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode).

[0118] The camera assembly 306 is used to capture images or videos. Optionally, the camera assembly 306 includes a front camera and a rear camera. Typically, the front camera is used to realize video calls or selfies, and the rear camera is used to realize the shooting of photos or videos. In some embodiments, there are at least two rear cameras, which are any one of a main camera, a depth of field camera, and a wide-angle camera, so as to realize the fusion of the main camera and the depth of field camera to realize the background blur function, and the fusion of the main camera and the wide-angle camera to realize panoramic shooting and VR (Virtual Reality) shooting functions. In some embodiments, the camera assembly 306 may also include a flash. The flash can be a monochrome temperature flash or a dual-color temperature flash. A dual-color temperature flash refers to a combination of a warm light flash and a cold light flash, which can be used for light compensation at different color temperatures.

[0119] The audio circuit 307 is used to provide an audio interface between the user and the terminal 300. The audio circuit 307 may include a microphone and a speaker. The microphone is used to collect sound waves from the user and the environment, and convert the sound waves into electrical signals and input them into the processor 301 for processing, or input them into the radio frequency circuit 304 to achieve voice communication. For the purpose of stereo acquisition or noise reduction, there may be multiple microphones, which are respectively arranged at different parts of the terminal 300. The microphone may also be an array microphone or an omnidirectional acquisition microphone. The speaker is used to convert the electrical signal from the processor 301 or the radio frequency circuit 304 into sound waves. The speaker may be a traditional film speaker or a piezoelectric ceramic speaker. When the speaker is a piezoelectric ceramic speaker, it can not only convert the electrical signal into sound waves audible to humans, but also convert the electrical signal into sound waves inaudible to humans for purposes such as ranging. In some embodiments, the audio circuit 307 may also include a headphone jack.

[0120] The positioning component 308 is used to locate the current geographical location of the terminal 300 to implement navigation or LBS (Location Based Service).

[0121] The power supply 309 is used to power various components in the terminal 300. The power supply 309 can be an alternating current, a direct current, a disposable battery, or a rechargeable battery. When the power supply 309 includes a rechargeable battery, the rechargeable battery can be a wired rechargeable battery or a wireless rechargeable battery. A wired rechargeable battery is a battery charged through a wired line, and a wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery can also be used to support fast charging technology.

[0122] In some embodiments, the terminal 300 further includes one or more sensors 310 , including but not limited to: an acceleration sensor 311 , a gyroscope sensor 312 , a pressure sensor 313 , a fingerprint sensor 314 , an optical sensor 315 , and a proximity sensor 316 .

[0123] The acceleration sensor 311 can detect the magnitude of acceleration on the three coordinate axes of the coordinate system established by the terminal 300. For example, the acceleration sensor 311 can be used to detect the components of gravity acceleration on the three coordinate axes. The processor 301 can control the touch display screen 305 to display the user interface in a horizontal view or a vertical view according to the gravity acceleration signal collected by the acceleration sensor 311. The acceleration sensor 311 can also be used for collecting game or user motion data.

[0124] The gyro sensor 312 can detect the body direction and rotation angle of the terminal 300. The gyro sensor 312 can cooperate with the acceleration sensor 311 to collect the user's 3D (3 Dimensions) action on the terminal 300. The processor 301 can implement the following functions based on the data collected by the gyro sensor 312: motion sensing (such as changing the UI according to the user's tilt operation), image stabilization during shooting, game control, and inertial navigation.

[0125] The pressure sensor 313 can be set on the side frame of the terminal 300 and / or the lower layer of the touch display screen 305. When the pressure sensor 313 is set on the side frame of the terminal 300, it can detect the user's holding signal of the terminal 300, and perform left and right hand recognition or shortcut operation according to the holding signal. When the pressure sensor 313 is set on the lower layer of the touch display screen 305, it can control the operability control on the UI interface according to the user's pressure operation on the touch display screen 305. The operability control includes at least one of a button control, a scroll bar control, an icon control, and a menu control.

[0126] The fingerprint sensor 314 is used to collect the user's fingerprint to identify the user's identity based on the collected fingerprint. When the user's identity is identified as a trusted identity, the processor 301 authorizes the user to perform relevant sensitive operations, including unlocking the screen, viewing encrypted information, downloading software, paying, and changing settings. The fingerprint sensor 314 can be set on the front, back, or side of the terminal 300. When a physical button or a manufacturer logo is set on the terminal 300, the fingerprint sensor 314 can be integrated with the physical button or the manufacturer logo.

[0127] The optical sensor 315 is used to collect the ambient light intensity. In one embodiment, the processor 301 can control the display brightness of the touch display screen 305 according to the ambient light intensity collected by the optical sensor 315. Specifically, when the ambient light intensity is high, the display brightness of the touch display screen 305 is increased; when the ambient light intensity is low, the display brightness of the touch display screen 305 is reduced. In another embodiment, the processor 301 can also dynamically adjust the shooting parameters of the camera assembly 306 according to the ambient light intensity collected by the optical sensor 315.

[0128] The proximity sensor 316, also called a distance sensor, is usually arranged on the front of the terminal 300. The proximity sensor 316 is used to collect the distance between the user and the front of the terminal 300. In one embodiment, when the proximity sensor 316 detects that the distance between the user and the front of the terminal 300 is gradually decreasing, the processor 301 controls the touch display screen 305 to switch from the screen-on state to the screen-off state; when the proximity sensor 316 detects that the distance between the user and the front of the terminal 300 is gradually increasing, the processor 301 controls the touch display screen 305 to switch from the screen-off state to the screen-on state.

[0129] Those skilled in the art will understand that Figure 4 The structure shown in the figure does not constitute a limitation on the terminal 300, and the terminal 300 may include more or less components than those shown in the figure, or combine some components, or adopt a different component arrangement.

[0130] Embodiment 4

[0131] In an exemplary embodiment, a computer-readable storage medium is also provided, on which a computer program is stored. When the program is executed by a processor, a simulation analysis method for the waterproofness of an automotive electronic product as provided in all the inventive embodiments of the present application is implemented.

[0132] Any combination of one or more computer-readable media may be used. A computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, device, or device.

[0133] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0134] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0135] Computer program code for performing the operations of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0136] Embodiment 5

[0137] In an exemplary embodiment, an application product is also provided, including one or more instructions, and the one or more instructions can be executed by the processor 301 of the above-mentioned device to complete the above-mentioned automotive electronic product waterproof simulation analysis method.

[0138] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A simulation analysis method for the waterproofness of automotive electronic products, characterized in that: include: Obtain water pressure and critical contact pressure curve data; Perform waterproof simulation modeling on the three-dimensional data of the automotive electronic product to be tested, create static analysis steps and boundary conditions according to the water pressure and critical contact pressure curve data, and perform analysis to obtain a simulation model file and a simulation result file; The waterproof performance is verified according to the simulation model file and the simulation result file.

2. The method for simulating and analyzing the waterproofness of automotive electronic products according to claim 1, characterized in that: The step of obtaining the water pressure and critical contact pressure curve data includes: Under the condition of rubber sealing strips of the same material, a waterproof simulation test was carried out to obtain the corresponding rubber compression data when water leakage occurred under multiple different water pressures; The water pressure and critical contact pressure curve data are obtained according to the compression amount data of the corresponding rubber when water leaks under the multiple different water pressures.

3. The method for simulating and analyzing the waterproofness of automotive electronic products according to claim 1, characterized in that: The step of performing waterproof simulation modeling on the three-dimensional data of the automotive electronic product to be tested includes: Importing the three-dimensional data of the automotive electronic product to be tested into the Hypermesh software, deleting the three-dimensional data of the electronic components inside the box and retaining the three-dimensional data of the box, the rubber sealing strip and the upper cover; The upper cover is moved upward to a displacement amount that does not interfere with the rubber strip, and the three-dimensional data of the box body, the rubber sealing strip, and the upper cover are meshed and imported into the Abaqus software; Assign material properties to each part individually.

4. The method for simulating and analyzing the waterproofness of automotive electronic products according to claim 3, characterized in that: The step of creating a static analysis step and boundary conditions according to the water pressure and critical contact pressure curve data and performing analysis to obtain a simulation model file and a simulation result file includes: Create 4 static analysis steps, where: In the initial analysis step, a contact relationship is created between the rubber strip and the upper cover and the box body; To simulate the assembly process of electronic products, the first boundary condition is created in the initial analysis step to impose full constraints on the inner surface of the bolt connection hole between the box and the upper cover in the box; Create the second boundary condition to impose full constraints on the inner surface of the bolt connection hole between the upper cover and the box body; Create a predefined field boundary condition and set the initial temperature of the entire model to 25°C; According to the water pressure at the water depth position of the part corresponding to the test condition data and the water pressure and critical contact pressure curve data, the corresponding critical contact pressure is obtained, and according to the corresponding water pressure at the water depth position of the part and the corresponding critical contact pressure, the pressure penetration is created in the second analysis step; In the third analysis step, the temperature of the entire model was adjusted to 0°C; In the fourth analysis step, the temperature of the entire model was adjusted to 100 °C; Create a simulation task and submit it for analysis and calculation. After the calculation is completed, you will get the simulation model file in inp format and the simulation result file in ODB format.

5. The method for simulating and analyzing the waterproofness of automotive electronic products according to claim 4, characterized in that: Modifying the constraints in the initial analysis step includes: All U3 degrees of freedom fixed constraints in the second boundary condition are changed to downward displacement, and the displacement amount is the displacement amount of the upper cover moving upward to not interfere with the rubber strip in the waterproof simulation modeling; Select a position in the constraints of the second boundary condition to maintain the fixed constraints of U1, U2, UR1, UR2 and UR3 unchanged; In the constraint of the second boundary condition, the degrees of freedom of U1, U2, UR1, UR2 and UR3 at other positions are released.

6. The method for simulating and analyzing the waterproofness of automotive electronic products according to claim 5, characterized in that: Modifying the constraint conditions in the initial analysis step further includes: When the degrees of freedom of U1, U2, UR1, UR2 and UR3 at other positions are released in the constraints of the second boundary condition, Among the constraints of the first boundary condition, select the constraints at the positions corresponding to the constraints of the second boundary condition, and release the U1, U2, UR1, UR2 and UR3 degrees of freedom.

7. The method for simulating and analyzing the waterproofness of automotive electronic products according to claim 1, characterized in that: The waterproof performance verification according to the simulation model file and the simulation result file includes: Importing the simulation model file and the simulation result file into Hyperview software; According to the contact pressure nephogram results on the sealing surface, determine whether the contact pressure nephogram results on the sealing surface are continuous: Yes, proceed to the next step; No, the model needs to be optimized and re-simulated; According to the fluid pressure cloud diagram results, determine whether the scope of the fluid pressure only includes the surface of the sealing strip outside the electronic product: Yes, the sealing meets the requirements; No, the sealing does not meet the requirements and the model needs to be optimized and re-simulated.

8. A simulation analysis device for waterproofness of automotive electronic products, characterized in that: include: An acquisition module, used to acquire water pressure and critical contact pressure curve data; A simulation module is used to simulate and model the waterproofness of the three-dimensional data of the automotive electronic product to be tested, create static analysis steps and boundary conditions according to the water pressure and critical contact pressure curve data, and perform analysis to obtain a simulation model file and a simulation result file; The verification module is used to verify the waterproof performance according to the simulation model file and the simulation result file.

9. A terminal, characterized in that: include: one or more processors; a memory for storing the one or more processor-executable instructions; Wherein, the one or more processors are configured to: Execute a simulation analysis method for waterproofness of automotive electronic products as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by the processor of the terminal, the terminal is enabled to execute the waterproof simulation analysis method for automotive electronic products as described in any one of claims 1 to 7.

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